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单词 polypantograph
释义

> as lemmas

polypantograph
polypantograph n. Obsolete a mechanical copying instrument producing several identical copies simultaneously from one diagram (cf. pantograph n.).
ΚΠ
1870 Rep. U.S. Commissioners Paris Universal Expos. 1867 462 (heading) Engraving—polypantograph.
a1877 E. H. Knight Pract. Dict. Mech. II. 1763/1 Polypantograph, an instrument on the principle of the pantograph, by which a number of similar designs may be simultaneously executed upon a metallic plate or roller from a single pattern. Invented by M. Gavard, Paris.
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更新时间:2025/1/27 20:56:56